vid2x264

#!/bin/bash

# Convert a video stream into high quality x264; by default 720p, CRF 20,
# preset: slow.

IFN=""
OFN=""
PROFILE="720high"

ENCSETTINGS_HIGH="-preset slow -crf 20" 
ENCSETTINGS_MED="-preset slow -crf 23"

usage() {
	echo "Convert a video stream into x264, copying audio."
	echo -e "\nUsage: $0 -i input_file [-p profile] [-d] output_file"
	exit 1
}

# Parse arguments

while getopts "i:p:d" OPT; do
	case $OPT in
		i ) IFN=$OPTARG  ;;
		p ) PROFILE=$OPTARG ;;
		d ) DRYRUN=1 ;;
	esac
done

shift $((OPTIND-1))
OFN="$1"; shift

[[ -z "$IFN" ]] && usage
[[ -z "$OFN" ]] && usage

# Profile definitions

if [[ $PROFILE == "high" ]]; then
	ENCSETTINGS="$ENCSETTINGS_HIGH"
elif [[ $PROFILE == "med" ]]; then
	ENCSETTINGS="$ENCSETTINGS_MED"
elif [[ $PROFILE == "720high" ]]; then
	HEIGHT="720"
	ENCSETTINGS="$ENCSETTINGS_HIGH"
elif [[ $PROFILE == "480med" ]]; then
	HEIGHT="480"
	ENCSETTINGS="$ENCSETTINGS_MED"
else
	echo "No valid profile specified!"
	exit
fi

# Compile command line and run ffmpeg

[[ -n $HEIGHT ]] && VF="-vf scale=-2:$HEIGHT"
CMD="ffmpeg -y -i '$IFN' $VF -c:v libx264 $ENCSETTINGS -c:a copy $@ '$OFN'"

echo "$CMD"
[[ -z $DRYRUN ]] && eval $CMD